A continuous casting device and method for casting a titanium-containing alloy steel liquid

Abstract

The present application relates to continuous casting pouring technical field, especially to a kind of titanium-containing alloy steel liquid's continuous casting pouring device and method, including ladle and tundish and workstation, workstation is rotatably installed with load plate, two ladle positions for placing ladle are opened in load plate, the bottom of workstation is fixedly connected with the induction coil long shroud that is communicated with ladle, tundish is fixedly connected with breather bushing, breather bushing is inserted with breather stopper, tundish outside is equipped with tank for guiding argon, the bottom of tundish is provided with induction coil submerged entry nozzle, for guiding molten steel into continuous casting crystallizer, tundish bottom is provided with slow flow mechanism for slowing down the impact force of molten steel falling, the argon is injected in the breather stopper, the titanium-containing steel with poor fluidity is not dead in tundish nozzle, after molten steel flows into tundish nozzle, induction coil submerged entry nozzle also generates induction magnetic field, so that molten steel does not solidify before entering crystallizer.

Description

Technical Field

[0001] This invention relates to the field of continuous casting technology, specifically to a continuous casting apparatus and method for titanium alloy molten steel. Background Technology

[0002] Continuous casting is a technology that continuously cools and solidifies molten metal into slabs on a continuous casting machine. It boasts advantages such as high efficiency, energy saving, and low cost, and is widely used in the iron and steel metallurgical industry. Generally, titanium is considered an alloying element in molten steel only when its titanium content exceeds 0.025%. As the titanium content in molten steel gradually increases, the viscosity of the steel changes. This is because the radius of a titanium atom is larger than that of an iron atom, restricting the free space of the molten iron and increasing the viscosity of the steel, thus reducing its fluidity. Currently, continuous casting machines can generally pour molten steel with high fluidity smoothly, but they struggle with titanium-containing molten steel with poor fluidity. When the molten steel flows into the long nozzle, tundish nozzle, or submerged entry nozzle under the ladle, it solidifies due to its poor fluidity, making pouring impossible. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a continuous casting apparatus and method for titanium alloy molten steel, which has the advantage that the molten steel will not solidify before entering the crystallizer, and can enter the continuous casting crystallizer to cool and form a billet. This solves the problem that titanium alloy molten steel with poor fluidity will solidify due to its poor fluidity, making it impossible to cast smoothly.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A continuous casting apparatus for titanium alloy molten steel includes a ladle, a tundish, and a worktable. A load-bearing plate is rotatably mounted on the worktable, and two ladle positions are provided on the load-bearing plate for placing the ladle. An induction coil long nozzle connected to the ladle is fixed to the bottom of the worktable and inserted into the tundish. A venting sleeve is fixed to the tundish, and a venting plug is inserted into the venting sleeve. A tank for introducing argon gas is installed on the outside of the tundish. An induction coil immersion nozzle is provided at the bottom of the tundish for introducing molten steel into the continuous casting crystallizer. A flow-slowing mechanism is provided at the bottom of the tundish to reduce the impact force of the falling molten steel.

[0006] Preferably, the flow control mechanism includes a transmission sleeve connected to the bottom of the long inlet of the induction coil, a connecting pipe slidably connected to the bottom of the transmission sleeve, and multiple movable flow guiding components provided inside the connecting pipe.

[0007] Preferably, the flow guiding component includes a V-shaped plate, two connecting blocks are fixedly connected to one side of the V-shaped plate, a baffle is fixedly connected to the V-shaped plate, and an inclined plate is fixedly connected to the bottom of the connecting blocks.

[0008] Preferably, a connecting strip is fixedly connected to the V-shaped plate, an insert is fixedly connected to the end of the connecting strip, a bracket is fixedly connected to the outside of the transmission sleeve, and a belt is provided on the bracket for driving the flow guide assembly to move out of the connecting pipe.

[0009] Preferably, the flow guiding component includes pulleys rotatably mounted on both sides of the bracket, a belt connecting the pulleys, a motor b for driving the pulleys is fixed on the bracket, a plurality of U-shaped blocks that are fixed to the belt and the insert block, and a sliding groove for sliding connection with a V-shaped plate is provided on the bracket.

[0010] Preferably, the bottom of the intermediate liner is provided with an electric telescopic rod, the free end of which is connected to a connecting pipe.

[0011] Preferably, an electric push rod b is fixedly mounted on the outside of the intermediate tundish, the free end of the electric push rod b is connected to a venting plug, the outlet of the tank is connected to a guide pipe through a pipeline, and an electric push rod a is fixedly mounted on the intermediate tundish for moving the guide pipe.

[0012] Preferably, a motor a for switching between two ladle positions is fixedly installed at the bottom of the workbench, and the output end of motor a is fixedly connected to a drive shaft connected to the load plate.

[0013] Preferably, the height of the induction coil's long nozzle is 150-200cm, and the lower radius is 150-180cm.

[0014] A continuous casting method for titanium alloy molten steel includes the following steps:

[0015] S1. First, place the ladle on the ladle position, then rotate the load plate to the side corresponding to the long water inlet of the induction coil, so that continuous pouring can be carried out.

[0016] S2. The molten steel enters the tundish through the long nozzle of the induction coil, which generates a vortex in the molten steel and improves its fluidity.

[0017] S3. After the molten steel enters the tundish, add 60 kg of clean alkaline covering agent and 16 kg of carbonized rice husks into the tundish. This will prevent the molten steel in the tundish from contacting the air and will also keep it warm. The clean alkaline covering agent can also absorb impurities that float to the surface in the molten steel.

[0018] S4. When the molten steel in the tundish reaches a height of 30cm, open the venting plug. Argon gas will be injected into the venting sleeve inside the tank. The argon gas pressure is controlled at 0.2-0.5MPa to ensure that titanium-containing steels with poor fluidity do not clump at the tundish nozzle.

[0019] S5. After the molten steel flows into the induction coil immersion nozzle, an induced magnetic field will also be generated inside the induction coil immersion nozzle. The voltage of the induction coil immersion nozzle is controlled between 100-200V and the current is controlled between 50-100A to ensure that the power can reach 5-15KW, so that the molten steel will not solidify before entering the crystallizer. At that time, the molten steel can enter the continuous casting crystallizer to cool and form billets.

[0020] By means of the above technical solution, the present invention provides a continuous casting apparatus and method for titanium alloy molten steel, which has at least the following beneficial effects:

[0021] 1. The continuous casting device and method for titanium alloy steel liquid involves injecting argon gas into the venting plug rod to ensure that the titanium-containing steel with poor fluidity does not solidify at the tundish nozzle. After the molten steel flows into the tundish nozzle, the induction coil immersed in the nozzle will also generate an induced magnetic field, so that the molten steel will not solidify before entering the crystallizer. At that time, the molten steel can enter the continuous casting crystallizer to cool and form a billet.

[0022] 2. The continuous casting device and method for titanium alloy molten steel can increase the introduction speed of molten steel while ensuring deceleration. Since the height of molten steel affects the connecting pipe, different heights will have different effects on the pressure of the connecting pipe. Therefore, keeping the distance of the connecting pipe constant can ensure that the flow rate and pressure of molten steel entering the connecting pipe remain basically unchanged.

[0023] 3. The continuous casting apparatus and method for titanium alloy steel molten steel buffers the falling molten steel, preventing violent oscillations and eddies during its descent. This reduces oxidation and inclusion formation, improving the quality and uniformity of the molten steel. Furthermore, buffering reduces the impact force as the molten steel enters the crystallizer, decreasing wear and damage and extending equipment life. Therefore, this continuous casting apparatus can improve the quality and output of steel castings, reduce production costs, and enhance economic efficiency.

[0024] 4. The continuous casting apparatus and method for titanium alloy molten steel ensures stable molten steel flow and pressure, guaranteeing stable production efficiency. By adjusting the distance between the connecting pipe and the molten steel, ensuring the connecting pipe remains at the same distance from the molten steel at all times, production efficiency and product quality can be maximized.

[0025] 5. The continuous casting device and method for titanium alloy molten steel replaces the integral stopper rod in the tundish with a ventilated integral stopper rod, replaces the submerged entry nozzle with an induction coil submerged entry nozzle, and specifies the casting parameters for titanium alloy molten steel, so that the titanium alloy molten steel with poor fluidity can smoothly enter the continuous casting machine crystallizer for cooling and forming. Attached Figure Description

[0026] The accompanying drawings, which are provided to further illustrate the invention, constitute a part of this application:

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front.

[0028] Figure 2 This is a cross-sectional view of the present invention;

[0029] Figure 3 This is a schematic diagram of the external connection structure of the induction coil long water inlet of the present invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the connecting tube of the present invention;

[0031] Figure 5 This is a cross-sectional view of the transmission sleeve and connecting pipe of the present invention;

[0032] Figure 6 This is a schematic diagram of the external structure of the transmission sleeve of the present invention;

[0033] Figure 7 For the present invention Figure 6 Enlarged view of point A;

[0034] Figure 8 This is a schematic diagram of the flow guiding component of the present invention;

[0035] Figure 9 This is a schematic diagram of the control data curves before the improvement of the ventilated plug rod of the present invention;

[0036] Figure 10 This is a schematic diagram of the control data curve after the improvement of the ventilated plug rod of the present invention.

[0037] Figure label:

[0038] 100. Workbench; 101. Loading plate; 102. Ladle position; 103. Ladle; 104. Intermediate ladle; 105. Motor a; 106. Drive shaft; 107. Long induction coil nozzle; 108. Immersion induction coil nozzle; 109. Tank body; 1010. Vent sleeve; 1011. Vent plug; 1012. Guide pipe; 1013. Electric push rod a; 1014. Electric push rod b;

[0039] 200. Flow control mechanism; 201. Transmission sleeve; 202. Connecting pipe; 203. Electric telescopic rod; 204. Flow guiding assembly; 2041. Baffle; 2042. V-shaped plate; 2043. Inclined plate; 2044. Connecting block; 205. Connecting strip; 206. Insert block; 207. U-shaped block; 208. Bracket; 209. Belt component. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, a continuous casting apparatus and method for titanium alloy molten steel.

[0042] Example 1:

[0043] Combination Figures 1-3 As shown, the present invention provides a continuous casting apparatus for titanium alloy molten steel, comprising a ladle 103, a tundish 104, and a worktable 100. A load-bearing plate 101 is rotatably mounted on the worktable 100, and a ladle position 102 for placing the ladle 103 is provided on the load-bearing plate 101. An induction coil long nozzle 107 connected to the ladle 103 is fixedly connected to the bottom of the worktable 100 for introducing molten steel into the continuous casting mold. The induction coil long nozzle 107 is inserted into the tundish 104. A venting sleeve 1010 is fixedly connected to the tundish 104, and a permeable sleeve 1010 is inserted into the venting sleeve 1010. A gas plug 1011 is installed on the outside of the tundish 104, and a tank 109 for introducing argon gas is installed on the outside of the tundish 104. By raising and lowering the gas plug 1011, the tank 109 blows argon gas into the tundish 104 to stir the molten steel and increase the fluidity of the molten steel. The argon gas pressure is controlled at 0.2-0.5MPa. The bottom of the tundish 104 is equipped with an induction coil immersion nozzle 108, with the voltage controlled at 200-300V and the current controlled at 100-200A to ensure that the power can reach between 30-50KW. The bottom of the tundish 104 is equipped with a flow-slowing mechanism 200 to reduce the impact force of the falling molten steel.

[0044] The height of the induction coil long nozzle 107 is 150-200cm, and the lower radius is 150-180cm.

[0045] Application Example 1:

[0046] Taking the production of φ300 continuous casting billets of N08825 titanium-containing steel as an example (the titanium content in this steel is 0.6-1.2%), the tapping temperature of the LF furnace is controlled at 1550-1600℃. After the ladle 103 is placed into the load plate 101, the voltage and current of the induction coil long nozzle 107 and the submersible nozzle, as well as the argon flow rate of the venting plug 1011, are set as follows:

[0047] name Induction coil long water inlet Breathable plug Induction coil immersion water inlet Voltage / V 150 / 120 Current / A 110 / 70 Pressure / MPa / 0.3 /

[0048] Example 2:

[0049] Combination Figures 1-8 As shown, based on Embodiment 1, the flow-retarding mechanism 200 includes a transmission sleeve 201 connected to the bottom of the long inlet 107 of the induction coil. A connecting pipe 202 is slidably connected to the bottom of the transmission sleeve 201. The connecting pipe 202 is provided with multiple movable flow-guiding components 204. The flow-guiding components 204 can reduce the impact force generated by the falling molten steel, raise the connecting pipe 202, and then remove the corresponding part of the flow-guiding components 204. The number of flow-guiding components 204 can be adjusted according to the height of the molten steel in the crystallizer. The higher the height of the molten steel, the higher the connecting pipe 202 rises, so that the connecting pipe 202 always maintains the same distance from the molten steel. Furthermore, reducing the number of flow-guiding components 204 can increase the introduction speed of the molten steel while ensuring the reduction of the impact force. Since the height of the molten steel affects the connecting pipe 202, different heights will have different effects on the pressure of the connecting pipe 202. Therefore, keeping the distance of the connecting pipe 202 constant can ensure that the flow rate and pressure of the molten steel entering the connecting pipe remain basically unchanged.

[0050] Specifically, the flow guiding component 204 includes a V-shaped plate 2042, with two connecting blocks 2044 fixedly connected to one side of the V-shaped plate 2042. A baffle 2041 is fixedly connected to the V-shaped plate 2042, and an inclined plate 2043 is fixedly connected to the bottom of the connecting blocks 2044. The molten steel first falls onto the V-shaped plate 2042 and then is guided onto the inclined plate 2043, which can mitigate the impact of the molten steel falling in various ways, further improving the impact force of the molten steel falling.

[0051] Furthermore, a connecting strip 205 is fixedly connected to the V-shaped plate 2042, and an insert block 206 is fixedly connected to the end of the connecting strip 205. A bracket 208 is fixedly connected to the outside of the transmission sleeve 201. The bracket 208 is provided with a belt component 209 for driving the flow guiding component 204 out of the connecting pipe 202. The belt component 209 can operate to guide the flow guiding component 204 out of the connecting pipe 202 and to guide the flow guiding component 204 into the connecting pipe 202. Thus, the number of flow guiding components 204 can be adjusted according to the height of the molten steel. The higher the molten steel in the crystallizer, the fewer the number of flow guiding components 204, and vice versa.

[0052] As demonstrated in the embodiments, buffering the falling molten steel can prevent violent oscillations and eddies during its descent, thereby reducing oxidation and inclusion formation, and improving the quality and uniformity of the steel. Furthermore, buffering reduces the impact force of the molten steel as it enters the crystallizer, decreasing wear and damage and extending equipment life. Therefore, this continuous casting apparatus can improve the quality and output of steel castings, reduce production costs, and enhance economic efficiency.

[0053] Example 3:

[0054] Combination Figures 6-8As shown, based on Embodiment 1, the flow guiding assembly 204 includes pulleys rotatably mounted on both sides of the bracket 208, with a belt connecting the pulleys. A motor b for driving the pulleys is fixedly mounted on the bracket 208. Multiple U-shaped blocks 207 fixedly connected to the insert block 206 are attached to the belt. A sliding groove is provided on the bracket 208 for sliding connection with a V-shaped plate 2042. The motor b drives one of the pulleys to rotate, which can move the U-shaped blocks 207 on the belt. Since the U-shaped blocks 207 are inserted into the insert block 206, the U-shaped blocks 207 drive the connecting strip on the insert block 206. As the V-shaped plate 2042 moves along with the connecting strip 205, the flow guiding component 204 can be moved out as a whole. When the molten steel in the crystallizer continues to rise, the connecting pipe 202 drives the flow guiding component 204 to rise. Then, the corresponding insert block 206 on the flow guiding component 204 is inserted into the U-shaped block 207. Then, the belt conveyor 209 conveys and moves the flow guiding component 204 to the corresponding position. When the crystallization is completed and molten steel needs to be added back to the crystallizer, the belt conveyor 209 reverses the transmission and can push the flow guiding component 204 into the connecting pipe 202 through the chute.

[0055] Specifically, the bottom of the intermediate package 104 is provided with an electric telescopic rod 203. The free end of the electric telescopic rod 203 is connected to the connecting pipe 202. When the electric telescopic rod 203 is activated, it causes the free end to retract or extend, thereby raising or lowering the connecting pipe 202.

[0056] Furthermore, an electric push rod b1014 is fixedly mounted on the outside of the intermediate ladle 104. The free end of the electric push rod b1014 is connected to the venting plug 1011. The output port of the tank body 109 is connected to the guide pipe 1012 through a pipe. An electric push rod a1013 is fixedly mounted on the intermediate ladle 104 to drive the guide pipe 1012 to move. The free end of the electric push rod b1014 moves upward, which can remove the venting plug 1011 from the venting sleeve 1010. Then, the free end of the electric push rod a1013 drives the guide pipe 1012 to move, moving the output port of the guide pipe 1012 to the position of the venting sleeve 1010. Then, the pump body on the tank body 109 starts to introduce argon gas into the venting sleeve 1010 to stir the molten steel.

[0057] The bottom of the workbench 100 is fixedly equipped with a motor a105 for switching between the two ladle positions 102, and the output end of the motor a105 is fixedly connected to a drive shaft 106 connected to the load plate 101.

[0058] As can be seen from the embodiments, stable molten steel flow and pressure can ensure stable production efficiency. By adjusting the distance between the connecting pipe 202 and the molten steel, ensuring that the connecting pipe 202 always maintains the same distance from the molten steel, production efficiency and product quality can be maximized.

[0059] Example 4:

[0060] Combination Figure 1 and Figure 2 As shown, the present invention provides a continuous casting method for titanium alloy steel liquid, comprising:

[0061] S1. First, place the ladle 103 on the ladle position 102, then rotate the load plate 101 to the side corresponding to the induction coil long water inlet 107, so that continuous pouring can be carried out.

[0062] S2. The molten steel enters the tundish 104 through the long induction coil nozzle 107, which generates a vortex in the molten steel within the long induction coil nozzle 107, thereby improving the fluidity of the molten steel.

[0063] S3. After the molten steel enters the tundish 104, 60 kg of clean alkaline covering agent and 16 kg of carbonized rice husk are added to the tundish 104. This not only blocks the molten steel in the tundish 104 from contacting the air, but also keeps it warm. The clean alkaline covering agent can also absorb impurities that float to the surface in the molten steel.

[0064] S4. When the molten steel in the tundish 104 reaches a height of 30cm, open the venting plug 1011. Argon gas will be injected into the venting sleeve 1010 from the tank body 109. The argon gas pressure is controlled at 0.2-0.5MPa to ensure that titanium-containing steel with poor fluidity will not clump at the nozzle of the tundish 104.

[0065] S5. After the molten steel flows into the induction coil immersion nozzle 108, an induced magnetic field will also be generated inside the induction coil immersion nozzle 108. The voltage of the induction coil immersion nozzle 108 is controlled between 100-200V and the current is controlled between 50-100A to ensure that the power can reach 5-15KW, so that the molten steel will not solidify before entering the crystallizer. At that time, the molten steel can enter the continuous casting crystallizer to cool and form billets.

[0066] The corresponding temperatures of the molten steel are as follows:

[0067] steel molten temperature Flow rate (kg / min) Pulling speed (m / min) ≤1400℃ 550-605 1.0-1.1 1400℃-1410℃ 495-550 0.9-1.0 1410℃-1420℃ 440-495 0.8-0.9 1420℃-1430℃ 385-440 0.7-0.8 1430℃-1440℃ 330-385 0.6-0.7 1440℃-1450℃ 275-330 0.5-0.6 ≥1450℃ 220-275 0.4-0.5

[0068] like Figure 9 , Figure 10 The control data curve of the venting plug 1011 shown in the figure shows that the third line (position of venting plug 1011) has a continuous upward trend, which means that condensate accumulates at the lower position of venting plug 1011, causing the gap between venting plug 1011 and the tundish nozzle 104 to become smaller, and the flow rate of molten steel to decrease. Therefore, the position of venting plug 1011 must be moved upward to increase the gap between venting plug 1011 and the tundish nozzle 104, thereby increasing the flow rate.

[0069] After changing the long nozzle to an induction coil long nozzle 107, the integral stopper rod to a venting stopper rod 1011, and the submerged nozzle to an induction coil submerged nozzle 108, the position of the venting stopper rod 1011 during the casting process showed a basically horizontal trend, indicating that there was basically no condensate accumulation around the venting stopper rod 1011, the flow rate of molten steel into the tundish nozzle 104 remained at a normal level, and it was successfully cooled into a billet in the crystallizer.

[0070] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous casting apparatus for titanium alloy molten steel, comprising a ladle (103), a tundish (104), and a worktable (100), characterized in that: A load-bearing plate (101) is rotatably mounted on the workbench (100). The load-bearing plate (101) has two ladle positions (102) for placing the ladle (103). An induction coil long water inlet (107) connected to the ladle (103) is fixed to the bottom of the workbench (100). The induction coil long water inlet (107) is inserted into the tundish (104). A venting sleeve (1010) is fixed to the tundish (104). A venting plug rod (1011) is inserted into the venting sleeve (1010). A tank (109) for introducing argon gas is installed on the outside of the tundish (104). An induction coil immersion water inlet (108) is provided at the bottom of the tundish (104) for introducing molten steel into the continuous casting crystallizer. A flow-slowing mechanism (200) is provided at the bottom of the tundish (104) for reducing the impact force of the falling molten steel. The slow-flow mechanism (200) includes a transmission sleeve (201) connected to the bottom of the long water inlet (107) of the induction coil. A connecting pipe (202) is slidably connected to the bottom of the transmission sleeve (201). A plurality of translational flow guiding components (204) are provided inside the connecting pipe (202). The flow guiding component (204) includes a V-shaped plate (2042), two connecting blocks (2044) are fixedly connected to one side of the V-shaped plate (2042), a baffle (2041) is fixedly connected to the V-shaped plate (2042), and an inclined plate (2043) is fixedly connected to the bottom of the connecting block (2044). A connecting strip (205) is fixedly connected to the V-shaped plate (2042), and an insert (206) is fixedly connected to the end of the connecting strip (205). A bracket (208) is fixedly connected to the outside of the transmission sleeve (201), and a belt (209) is provided on the bracket (208) for driving the flow guide assembly (204) to move out of the connecting pipe (202). The flow guiding component (204) includes pulleys rotatably mounted on both sides of the bracket (208), with a belt connecting the pulleys. A motor b for driving the pulleys is fixed on the bracket (208), and multiple U-shaped blocks (207) fixed on the belt and connected to the insert block (206). A sliding groove is provided on the bracket (208) for sliding connection with a V-shaped plate (2042).

2. The continuous casting apparatus for titanium alloy molten steel according to claim 1, characterized in that: The bottom of the intermediate package (104) is provided with an electric telescopic rod (203), and the free end of the electric telescopic rod (203) is connected to the connecting pipe (202).

3. The continuous casting apparatus for titanium alloy molten steel according to claim 1, characterized in that: An electric push rod b (1014) is fixedly mounted on the outside of the intermediate tundish (104). The free end of the electric push rod b (1014) is connected to the vent plug rod (1011). The outlet of the tank (109) is connected to the guide pipe (1012) through a pipe. An electric push rod a (1013) for moving the guide pipe (1012) is fixedly mounted on the intermediate tundish (104).

4. The continuous casting apparatus for titanium alloy molten steel according to claim 1, characterized in that: The bottom of the workbench (100) is fixedly equipped with a motor a (105) for switching between two ladle positions (102), and the output end of the motor a (105) is fixedly connected to a drive shaft (106) connected to the load plate (101).

5. The continuous casting apparatus for titanium alloy molten steel according to claim 1, characterized in that: The height of the induction coil long water inlet (107) is 150-200cm, and the lower radius is 150-180cm.

6. A continuous casting method for a continuous casting apparatus for titanium alloy molten steel according to any one of claims 1-5, characterized in that, Includes the following steps: S1. First, place the ladle (103) on the ladle position (102), and then rotate the load plate (101) to the side corresponding to the long water inlet (107) of the induction coil, so that continuous pouring can be carried out. S2. The molten steel enters the tundish (104) through the long nozzle (107) of the induction coil, so that the molten steel can generate vortex in the long nozzle (107) of the induction coil, thereby improving the fluidity of the molten steel. S3. After the molten steel enters the tundish (104), 60 kg of clean alkaline covering agent and 16 kg of carbonized rice husk are added to the tundish (104) to block the molten steel in the tundish (104) from contacting the air and to keep it warm. The clean alkaline covering agent can also absorb the impurities floating in the molten steel. S4. When the molten steel in the tundish (104) reaches a height of 30cm, open the venting plug (1011). Argon gas will be injected into the venting sleeve (1010) from the tank (109). The argon gas pressure is controlled at 0.2-0.5MPa to ensure that the titanium-containing steel with poor fluidity will not clump at the nozzle of the tundish (104). S5. After the molten steel flows into the induction coil immersion nozzle (108), an induced magnetic field will also be generated inside the induction coil immersion nozzle (108). The voltage of the induction coil immersion nozzle (108) is controlled between 100-200V and the current is controlled between 50-100A to ensure that the power can reach 5-15KW, so that the molten steel will not solidify before entering the crystallizer. At that time, the molten steel can enter the continuous casting crystallizer to cool and form billets.

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